1.总是出现MACH_TYPE = 1999NOW, Booting Linux……Uncompressing Linux………………………………………………………………………….. done, booting the kernel.
停止的情况
下面的是tools/mach-types中关于体系的参数定义
s3c2440 ARCH_S3C2440 S3C2440 362
mini2440 MACH_MINI2440 MINI2440 1999
解决方法：将第一行改成 s3c2440 ARCH_S3C2440 S3C2440 1999
2.内核的配置
1..[*] Enable loadable module support —>
[*] Module unloading
2. System Type —-> [*] S3C2410 DMA support [*] Support ARM920T processor S3C2440 Machines —> [*] SMDK2440 [*] SMDK2440 with S3C2440 CPU moduleq
其他的比如2410,2443相关的全部去掉
3.Boot options —> 将 (root=/dev/hda1 ro init=/bin/bash console=ttySAC0) Default kernel command string
改成 (noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0 ） 其中 mtdblock2 表示 MTD 分区的第二个分区存文件系统； Linuxrc 为启动的首个脚本。
4关掉nand ecc .因为bootload中已经有ecc校验算法
Device Drivers —> <*> Memory Technology Device (MTD) support —> [*] MTD partitioning support <*> NAND Device Support —> <*> NAND Flash support for S3C2410/S3C2440 SoC [ ] S3C2410 NAND Hardware ECC // 这个要去掉
3.添加nand flash驱动（可参考arm/plat-s3c24xx/common-smdk.c)
在arm/mach-mini2440.c
中添加static struct mtd_partition mini2440_default_nand_part[] = { [0] = { .name = “supervivi”, .size = 0x00040000,//dev/mdkbloack0 .offset = 0, }, [1] = { .name = “param”, .offset = 0x00040000, .size = 0x00020000, }, [2] = { .name = “Kernel”, .offset = 0x00560000, .size =1024 * 1024 * 1024, }, [3] = { .name = “nand”, .offset = 0x00000000, .size = 1024 * 1024 * 1024, }, };
static struct s3c2410_nand_set mini2440_nand_sets[] = { [0] = { .name = “NAND”, .nr_chips = 1, .nr_partitions = ARRAY_SIZE(mini2440_default_nand_part), .partitions =mini2440_default_nand_part, },};
static struct s3c2410_platform_nand mini2440_nand_info = { .tacls = 20, .twrph0 = 60, .twrph1 = 20, .nr_sets = ARRAY_SIZE(mini2440_nand_sets), .sets = mini2440_nand_sets, .ignore_unset_ecc = 1,};
更改下列函数：
static void __init mini2440_machine_init(void){ s3c24xx_fb_set_platdata(&mini2440_fb_info); s3c_i2c0_set_platdata(NULL); s3c_device_nand.dev.platform_data = &mini2440_nand_info; //添加内容 platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices)); //smdk_machine_init();}
static struct platform_device *mini2440_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
&s3c_device_nand, // 把 nand flash 设备添加到开发板的设备列表结构
};
更改drivers/mtd/nand/s3c2410.c关闭ecc校验
chip->ecc.mode = NAND_ECC_SOFT;
改为：chip->ecc.mode = NAND_ECC_NONE;
注意：否则将会出现很多问题Unable to handle kernel NULL pointer dereference at virtual address 00000018pgd = c0004000[00000018] *pgd=00000000Internal error: Oops: 5 [#1]
make zIamge下载后报错
出现一大堆错误：
arch/arm/mach-s3c2440/mach-mini2440.c:84: error: array type has incomplete element typearch/arm/mach-s3c2440/mach-mini2440.c:85: error: array index in non-array initializerarch/arm/mach-s3c2440/mach-mini2440.c:85: error: (near initialization for ‘mini2440_nand_sets’)arch/arm/mach-s3c2440/mach-mini2440.c:86: error: field name not in record or union initializerarch/arm/mach-s3c2440/mach-mini2440.c:86: error: (near initialization for ‘mini2440_nand_sets’)arch/arm/mach-s3c2440/mach-mini2440.c:87: error: field name not in record or union initializer
在macn-mini2440中添加头文件
#include <plat/common-smdk.h>#include <linux/mtd/mtd.h>#include <linux/mtd/nand.h>#include <linux/mtd/nand_ecc.h>#include <linux/mtd/partitions.h>#include <plat/nand.h>//这个也不能少的哦
编译后下载：
affs: dev is 32505858 name is “mtdblock2″yaffs: passed flags “”yaffs: Attempting MTD mount on 31.2, “mtdblock2″yaffs: auto selecting yaffs2yaffs_read_super: isCheckpointed 0VFS: Mounted root (yaffs filesystem) on device 31:2.Freeing init memory: 128KKernel panic – not syncing: Attempted to kill init
解决办法： 这个时候懵了,哪里错呢~ 没办法,只能对照着友善的配置一个个大模块对着来改当改到Kernel Features的时候错误消失了,原来需要选上Use the ARM EABI to compile the kernelAllow old ABI binaries to run with thie Kernel为什么呢?~ Google了一下,原来友善的根文件系统在编译的时候也启用了EABI特性,内核和文件系统需要对上文件系统用了EABI 内核也要用EABI 内核不用EABI 也只能读取不用EABI的文件系统
，见过旅行风景，就这样，慢慢学会了长大。
